Emotet Office (OLE) / .DOCX malware analysis — malicious · a89a3fb97be7cefc

MALICIOUS

Office (OLE) / .DOCX

189.1 KB Created: 2020-09-18 14:02:00 Authoring application: Microsoft Office Word

MD5: a706809f2fc8c49ac2dd4b8a9890b6a5 SHA-1: 85fa049b3a257c065607f0513394c606b86ea5ee SHA-256: a89a3fb97be7cefc4d26bbdfb463943abc4b7a4ad8f448b559cabed432592458

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file contains VBA macros, specifically a Document_Open auto-exec macro, which is a strong indicator of malicious intent. The ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9763588-0', suggesting its purpose is to download additional malware. The CreateObject call heuristic further supports the execution of arbitrary code. The document body content is heavily corrupted and unreadable, providing no additional context.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9763588-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9763588-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `439e57830647c2aa4289de5e25d2759440b9e1601599acc03def2897db1f3da9`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	20114 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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